2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125293Standard methods of the theory of permanent state reduction are shown to offer an alternative realization of Omnès' project. Our proposal, as simple as Omnès' one, possesses closed master equation for the ensemble density operator, assuring causality.5 pages Latex, 30-April-1994General Relativity and Quantum Cosmologytext